Internal dandy-roll wiping device



Patented June 20, |899. F. MDRAN & J. REARDON.

INTERNAL DANDY ROLL WIPING DEVICE.

(Applicatiun Bled Dec. 11, 1897.)

rio. 627,305.

(No Model.)

TH: Nonms #Urns co. PNoToLnHn.. WASHINGTON. y C- i UNITED STATES VPATENTOFFICE.

FRANK MoEAN AND .IoIIN EEAEDON, oF HoLYoKE, MASSACHUSETTS.

l INTERNAL 'DAraoY-l-iolsi.` WIPING DEVICE.

\ sPEcIFIcAfIIoN forming-.pare of Lettere Patent 110,627,305, dated June20,1899.

Application filed December 11, 1897. Serial No. 661,544. (No model.) l

To all whom it wwty con/067%.' Be it known that We, FRANK MORAN an JOHNREARDON, citizens of the United States of America, residing' at Holyoke,in the county of Hampden and State of Massachusetts, have invented newand useful Improvements in Internal Dandy-Roll lViping Devices, of whichthe following is a specification.

This invention relates to dandy-rolls for paper-machines, and has forits objects the prel ventionof the accumulation of foam in such rollsduring their operation on such machines,

`the injury to the paper resulting from said claim.

In the drawings forming part of this specification, Figure l is alongitudinal sectional view of a dandy-roll having a foam-wiper appliedthereto in accordance with our invention. Fig. 2 is a sectional view online 2 2, Fig. l; andFig. 3 is a perspective view of a portion of thefoam-wiping apron and its supporting-rod.

Referring to the drawings, 2 2 indicate the heads of the dandy-roll, and3 3 the supporting-Shafts of the roll projecting from each head, whichsupport the roll, in connection with suitable bearing-boxes therefor forthe rotary movement which is imparted to the roll by the contact of itsopen-work-bodysurface 5 with the wet paper mat on the paper-machine. Forthe purposes of this invention said roll-shafts are made tubular, asshown.

The foam-wiping devices of the interior of the roll consist of afoam-wiper of a strip of felt et or similar iiexible material supportedin the roll in such a way that one border thereof uis brought near to orin contact with the interior Surface of said open-work body 5, clearlyillustrated in Figs. 2 and 3. The preferred devices for so Supportingsaid foamwiper 4. in said position in the roll consist of the followingelements: a rod 6, extending` axially through the dandy-roll .from endto end, having its extremities entering said tubular supporting-shafts 3loosely, so that the roll may rotate without imparting any rotarymovement to said rod. It is preferable that a nut 7 be applied to eachend of said rod 6` to prevent endwisemovement thereof in the roll. y Onsaid rod, near the heads of the roll, are hung, loosely, two links 8 8,and said links support a Wiper-holding bar 9, on which said felt orother wiper4 is hung, as shown. i The said rod 6, links 8,Wiper-holding`bar 9|, and foam-wi per 4, are easily applied to the rollby passing all of said parts which are hung on the rod 6 through anopening or openings in the head 2 after said rod 6 shall have beenplaced in the roll with one end entering one of said supporting tubularshafts 3 and the opposite end extending more or less into the roll. Adandy-roll fitted with said foam-wiping devices is kept constantly clearof foam by the action of the wiper 4, which acts to crush and dissipatethe foam as fast as it rises through the surface of the roll, therebysecuring the aforesaid advantages relative to contributing to a steadycontinuous machine movement and to the improved quality of paperproduced thereby.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

The combination with the heads of dandyrolls, of trunnions 3 thereon, awiper-holding bar 9, links 8, one end of each of which is connected withopposite ends of said bar, a support axially located in said trunnionsand secured therein, with which the other ends of said links areconnected, and a wiper 4, of textile material, hung on said bar 9,whereby one border of said wiper may lie against the bottom interiorsurface of said roll, substantially as set forth.

. FRANK MORAN.

JOHN REARDON. Witnesses:

H. A. CHAPIN, K. I. CLEMoNs.

